Integrated Semantics for Information and Communication Systems. - Hans Weigand; Egon Verharen; Frank Dignum (DS-6, 1995)

Interoperable Transactions in Business Models: A Structured Approach. - Hans Weigand; Egon Verharen; Frank Dignum (CAiSE, 1996)

Meeting the Deadline: On the Formal Specification of Temporal Deontic Constraints. - Frank Dignum; Hans Weigand; Egon Verharen (ISMIS, 1996)

Implementation of a Cooperative Agent Architecture Based on the Language-Action Perspective. - Egon Verharen; Frank Dignum; Sander Bos (ATAL, 1997)

Cooperative Information Agents and Communication. - Egon Verharen; Frank Dignum (CIA, 1997)

Dynamic Business Models as a Basis for Interoperable Transaction Design. - Hans Weigand; Egon Verharen; Frank Dignum (Inf. Syst., 1997)